{"id":"55aeb032-f99","name":"cryptofeed402 perps + news context: Hyperliquid funding, OI and news sentiment in one call","description":"One-call market scan for trading agents. For each requested symbol (?symbols=BTC,ETH, 1-20 symbols; omit for the watchlist plus coins in the news, up to 25): Hyperliquid perp mark price, funding rate (hourly, 8h, annualized), open interest in USD, 24h volume, premium and extreme-funding rank, joined with news sentiment and headline attention vs the 7-day average. JSON, neutral flags, no advice. $0.01 USDC per call on Base via x402 v2 (no account, no API key). Bad params return 400, unknown symbol 404, stale data 503, all before any 402, so failed calls are never charged. Example: https://cryptofeed402.site/perps/context?symbols=BTC,ETH. 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